移去rt

hc

2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/kernel/debug/kdb/kdb_keyboard.c
..
..
@@ -173,11 +173,11 @@
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 	case KT_LATIN:
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 		if (isprint(keychar))
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 			break;		/* printable characters */
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-		/* drop through */
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+		fallthrough;
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 	case KT_SPEC:
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 		if (keychar == K_ENTER)
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 			break;
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-		/* drop through */
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+		fallthrough;
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 	default:
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 		return -1;	/* ignore unprintables */
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 	}